Nikolay Sivov : msxml3: Fix invalid read before allocated block (Valgrind).

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 952f0a6af43f9252d696953a99e37a4b5ba4a1fd
URL:    http://source.winehq.org/git/wine.git/?a=commit;h=952f0a6af43f9252d696953a99...

Author: Nikolay Sivov 
Date:   Sun Jan 23 14:13:01 2011 +0300

msxml3: Fix invalid read before allocated block (Valgrind).

---

dlls/msxml3/node.c |    4 ++--
 1 files changed, 2 insertions(+), 2 deletions(-)

diff --git a/dlls/msxml3/node.c b/dlls/msxml3/node.c
index b2e5b16..08df8bd 100644
--- a/dlls/msxml3/node.c
+++ b/dlls/msxml3/node.c
@@ -534,8 +534,8 @@ static inline xmlChar* trim_whitespace(xmlChar* str)
     while (*ret && isspace(*ret))
         ++ret;
     len = xmlStrlen(ret);
-    while (isspace(ret[len-1]))
-        --len;
+    if (len)
+        while (isspace(ret[len-1])) --len;

ret = xmlStrndup(ret, len);
     xmlFree(str);